Unscrew the red pressure regulation button,plug in and turn on the motor, check whether the machine have got suction, and then turn it off and connect each pipe according to the above diagram.

l Turn on the motor, screw the pressure relief valve tightly until water outflows from the return pipe,and then turn down the pressure regulation button slowly,till the reading of pressure gauge reaches the pressure required. After it please tighten up the locking plate and then turn off the motor.

l Check if the reading of pressure gauge decreases,if the reading does not decrease, it shows that the tested vessels pressure resistance is good, contrarily,it shows there is leakage in the vessel.

l After finishing the task, we should unscrew pressure relief valve and pressure regulation button firstly,and then disassemble each pipes and tubes one by one. After it please turn on the motor and make it running unloaded for half minute in order to drain off the remaining water.

Mop the surface of the machine with cotton,put it at dry and shadow place,be prepared for the next time